Table I. Examples of useful caregivers' quality of life questionnaires with characteristics. SR, self-rated questionnaire; SI, structured interview.

Year	Name	Type	Indication	Number of items	Format	Dimensions	Viewpoint	Country	Authors
1992	Short From 36 (SF36)	SR	Generic (Caregivers or noncaregivers)	36	Variable	8: Physical functioning; social functionning; role-physical problems; role-emotional problems; mental health; vitality; bodily pain; general health. each dimension is scored within a range of 0 (low Qol level) to 100 (high Qol level).	Developed from previous existing instrument	USA	Ware and Sherbourne⁹⁰
2004	World Health Organization's Quality of Life Assessment (WHO-QOL-BREF)	SR	Generic (Caregivers or noncaregivers)	26	5-point Likert	4: Physical; psychological; social; environment.	Expert review, focus groups with healthy individuals and patients	International	Skevington⁹¹
2011	Schizophrenia Caregiver Quality of Life questionnaire (S-CGQoL)	SR	Schizophrenia	25	6-point Likert	7: Psychological and physical well-being; psychological burden and daily life; relationships with spouse; relationships with psychiatric team; relationships with family; relationships with friends; material burden.	Relatives' viewpoint	France	Richieri⁹²